The Vitamin C 23 Serum
더 비타민 C 23 세럼
COSRX
A potent 23% pure Vitamin C (Ascorbic Acid) serum that targets dark spots, wrinkles, and dullness. Lightweight, stable formula with visible brightening results within 3 weeks.
Key Ingredients
Pending enrichment
Humectant and solvent that enhances hydration
Silicone that creates smooth texture and protective barrier
pH adjuster and buffering agent
+ 15 more ingredients
Ingredient Effectiveness Data
Editorial baseline from K-beauty clinical research and community consensus. Real subscriber reports layer on as the community grows.
More Korean Serums
Frequently Asked Questions
What are the key ingredients in The Vitamin C 23 Serum?
The key active ingredients in The Vitamin C 23 Serum by COSRX include Vitamin C (brightening, antioxidant, collagen-synthesis), Ethyl Ascorbic Acid (Stable vitamin C derivative for brightening and antioxidant protection), Caffeine (Antioxidant and anti-inflammatory, reduces puffiness), Glutathione (Antioxidant and skin brightening agent), Adenosine (anti-aging, firming, soothing). Drawing on K-beauty research and community consensus, key ingredients show 86% effectiveness for dehydration in dry skin types. Seoul Sister tracks ingredient effectiveness across 5,900+ K-beauty products to provide data-backed recommendations.
Is The Vitamin C 23 Serum good for sensitive skin?
The Vitamin C 23 Serum is a Korean serum by COSRX. Sensitive skin compatibility depends on individual triggers and allergies. Seoul Sister's AI advisor Yuri analyzes all 20 ingredients against your specific skin type, concerns, and known allergens to provide a personalized compatibility score. Common irritant ingredients like fragrance, alcohol denat, and essential oils are flagged automatically.
Is The Vitamin C 23 Serum good for oily skin?
For oily skin, the key factors in evaluating The Vitamin C 23 Serum are comedogenic ingredient ratings, oil content, and finish type. This serum contains 7 active ingredients. Seoul Sister's database cross-references each ingredient's comedogenic rating (0-5 scale) against your skin type to identify potential pore-clogging risks. Subscribe for a personalized oily skin compatibility analysis.
How much does The Vitamin C 23 Serum cost?
The Vitamin C 23 Serum by COSRX starts from $22.50 USD for 20ml. Seoul Sister does not sell products — we compare retailer pricing so you can buy from the source.
Where to buy The Vitamin C 23 Serum?
The Vitamin C 23 Serum by COSRX is sold through Korean beauty retailers. Prices start from $22.50 USD. Seoul Sister verifies retailer authenticity and tracks counterfeit indicators to help you buy genuine Korean skincare products. We are an advice platform and never sell products ourselves.
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